ABSTRACT
Telecommunications is communication between two people from different areas. This communication is transferred as signals through wires. The signals of callers from one area are transmitted to nearest exchange and that is transferred to exchange near receiver by a two wire transmitter. In long distance communication hybrid is used to convert a two wire to four wire transmitter. Due to this change, impedance mismatching occurs. An echo will appear at the receiver end hybrid and it is received back to caller. This will create a problem to the caller and sometimes problem for receiver. This hybrid echo sometimes even cut the lines of the callers.
The technology is increasing day-by-day, but this problem is also increasing day-by-day.
problem is cannot avoided.
To avoid this problem there is one of many solutions. That is, we can use adaptive filters.
These adaptive filters can stop the echo coming from callers end.
…………….So on ..........(download any of the following links to get complete paper presentation in word document)
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